Sidebar Display
In a default installation, user group styling does not apply to the Staff Online Now and Members Online Now blocks in the sidebar.
To enable styling to show in these locations, the sidebar_online_users template must be edited.
Look for this line of code in the template:
class="username{xen:if '!{$user.visible}', ' invisible'}{xen:if {$user.followed}, ' followed'}">{$user.username},
Replace it with this:
class="username{xen:if '!{$user.visible}', ' invisible'}{xen:if {$user.followed}, ' followed'}">{xen:helper richUserName, $user},